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中国公路学报
CHINA JOURNAL OF HIGHWAY AND TRANSPORT
2007 Vol.20 No.2 P.92-96

数字化期刊

水平隧道火灾通风纵向控制风速的合理确定

徐琳  张旭 

摘 要:针对2种等宽度、不等高度的水平隧道模型,借助CFD技术分析了环境温度、火灾热释放强度、断面形状对临界风速的影响.选择断面水力高度为特征尺寸,获得2种隧道模型对应的量纲一的临界风速随热释放强度的变化关系,且其与缩尺模型试验及全尺度试验结果相比均具有较好的一致性;并基于CFD模拟结果,分析了Kennedy公式的不足.结果表明,大型隧道火灾通风纵向控制风速的确定过程中应避免使用Kennedy公式计算临界风速.
关键词:隧道工程;水平隧道;模拟;纵向控制风速;环境温度;火灾热释放强度;断面形状
分类号:U453.5 文献标识码:A

文章编号:1001-7372(2007)02-0092-05

Rational Determination of Longitudinal Control Wind Velocity for Fire Ventilation of Horizontal Tunnel

XU Lin  ZHANG Xu 

基金项目:上海市科技攻关重大项目(04dz12020)
作者简介:徐琳(1979-),女,山东烟台人,工学博士研究生,E-mail:xlzxq@sohu.com.
作者单位:徐琳(同济大学,热能利用与暖通空调燃气研究所,上海,200092) 
     张旭(同济大学,热能利用与暖通空调燃气研究所,上海,200092) 

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收稿日期:2006年5月14日

出版日期:2007年3月31日

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